Mexico has reported outbreaks of highly pathogenic H7N3 bird flu virus in two backyards in the states of Oaxaca and of Puebla in the southern part of the country, the World Organization for Animal Health said on Thursday. PARIS: Mexico has reported outbreaks of highly pathogenic H7N3 bird flu virus in two backyards in the states of Oaxaca and of Puebla in the southern part of the country, the World Organization for Animal Health said on Thursday.